The reverse barbell curl exercise works bicep and forearm muscles. I personally use the reverse barbell curl as a support exercise for the end of my bicep workout. It is good for building strength in your forearm and bicep muscles. If you have strong forearm muscles you can bicep curl more weights, and build more muscle so reverse bicep curls are recommended in your bicep workout!
You should try to use the reverse barbell curl towards the end of your bicep workout, as you donâ€™t want to wear out your forearms at the start of your workout because you wonâ€™t be able to lift heavy weights for the rest of your session.